When Rush played the opening night of their Fifty Something tour this past June—their first full concert in 11 years, and first since the death of drummer Neil Peart—the unexpected key takeaway was that Aimee Mann had joined them on stage for the first time ever to sing her part on “Time Stand Still,” a single from the band’s 1987 album Hold Your Fire. Though among their most poignant songs, it’s hard to imagine anyone who isn’t a Rush diehard even considering its existence these days.